Recent regional agreements: why so many, why so much variance in form, why coming so fast, and where are they headed?

Recent years have seen a sharp growth in the number of regional agreements both concluded and under negotiation. This paper attempts to document and discuss this growth focusing on US, EU, Chinese, Indian and other agreements. The form, coverage, and content of these agreements varies considerably from case to case. The paper asks why so many, why the variation in form, and why the recent acceleration. Implications for the trading system are discussed in a final section.